The Exclusive Upgrade increases the ammo to 100 rounds for 60,000 PTAS.

movement speed glitch

The Striker also has the ability to slightly break the game with regards to Leon's movement speed while in-game. This glitch is a rather simple one to activate however.

Step 1) Equip the Striker

Step 2) Aim the Striker but as soon as you hit the aim button open your inventory BEFORE the laser appears

Step 3) Equip another item in your inventory. Preferrably a grenade or an egg for maximum benefit.

Step 4) Leave exit your inventory and you should now be able to sprint at approximately 1.5 times the normal sprinting speed.

Note that several things can cancel this glitch. These things include taking damage, quick-time events, cutscenes, opening doors, vaulting over objects, climbing up laters, and jumping through windows.